// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database()
const _ = db.command

// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()

  let res = await db.collection('chatroom').orderBy('sendTimeTS','desc').get()


  return {
    event,
    openid: wxContext.OPENID,
    appid: wxContext.APPID,
    unionid: wxContext.UNIONID,
    messageList: res.data
  }
}